12kv Outdoor Air Load Break Switch Load Breaker Lbs

• Breaking Capacity: High Voltage Circuit Breakers
• Operation: Manual Type
• Arc-extinguishing Medium: Vacuum
• Installation: Fixed
• Type: Circuit Breaker
• Function: Conventional Circuit Breaker, Overcurrent Protection
• Model NO.: ZW43
• Transport Package: Export Box
• Trademark: DGG
• Origin: China
• HS Code: 8504311000
• Production Capacity: 100000PCS/Year

Product Description

General
Zw43-12 series intelligent outdoor high-voltage AC vacuum circuit breaker (hereinafter referred to as "intelligent circuit breaker"), which is an outdoor power distribution switchgear with a rated voltage of 12kV and three-phase AC 50Hz, mainly consists of ZW43-12 outdoor high-voltage AC vacuum circuit breaker body, DK series distribution automation feeder terminal, external voltage transformer, and control cable, etc. Arrester, single-side disconnector, or double-side disconnector can be installed according to user needs.

ZW43-12C outdoor high-voltage AC vacuum recloser has overload and short circuit protection, quick break protection, definite time-delay protection, and automatic recloser functions, effectively ensuring the good operation of the line.

ZW43-12F outdoor high-voltage AC boundary vacuum circuit breaker has a remote management mode, protection control function, and communication function, which can be reliably judged. The detection boundary is used for control and protection in substations, industrial and mining enterprises, and urban and rural power grids. It is especially suitable for places requiring frequent operation and urban milliampere zero sequence current and interphase fault short circuit current, which can automatically remove single-phase ground fault and interphase short circuit fault.

The intelligent circuit breaker complies with the technical standards such as High Voltage AC Circuit Breaker (GB/T1984-2014), High Voltage AC Circuit Breaker (DL/T402-2016), Technical Conditions for Ordering 12kV~40.5kV High Voltage Vacuum Circuit Breaker (DL/T403-2000) and Remote Terminal of Distribution Automation System (DL/T721-2013).


MODEL AND MEANING

 

Technical specification
No.	Item		Unit	Data
1	Rated frequency		Hz	50
2	Rated voltage		kV	12
3	Rated current		A	630/1250
4	Rated short-time power frequency withstand voltage	Interphase, to earth(wet)	kV/min	42/1
		Interphase, to earth(dry)		48/1
		Break(dry)		34/1
		Secondary circuit to earth		2/1
5	Rated lightning impulse withstand voltage	Interphase, to earth	kV	75
		Break		85
6	Rated short-circuit breaking current		kA	20/25
7	Rated short-circuit making current(peak)			50/63
8	Rated short-time withstand current and duration		kA/s	(20/25)/4
9	Rated peak withstand current		kA	50/63
10	Rated short-circuit breaking current breaking times		Times	30
11	Rated operating voltage and rated voltage of auxiliary circuit		V	AC/DC220,DC48,DC24
12	Main circuit resistance	Without isolation	μΩ	≤80
		With isolation		≤120
13	Mechanical life		Times	10000
Note: If the altitude is over 1000m, the rated insulation level should be modified as appropriate.

 

Outline and Dimensions